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Take a 18 question quiz to test and certify your knowledge of the tutorial-video course
AudioPedia 103 - Digital Audio Terms and Standards.
Get a mark of 80% or higher to pass this quiz!
1
A common standrad for "hi-res' digital audio is...
16/48
16/44.1
16/192
24/96
2
The two standard Sample Rates are...
88.2 kHz and 96 kHz
44.1 kHz & 48 kHz
50 kHz & 100 kHz
22.05 kHz & 24 kHz
3
The two most common Linear PCM audiofile formats are:
WAV & AAC
Lossless and MP3
MP3 & MP4
WAV & AIF
4
A codec is...
a digital database for different styles of music
an encode-decode formula for reducing audio file size
a MIDI controller
a processor used in the creation of LPCM audiofiles
5
A DAC...
converts MIDI to audio
converts PCM audio to AAC
converts analog signals to digital
converts digital signals to analog
6
Current lossy codecs for audio files include...
PCM, LPCM
AIFF, WAV
ALAC, FLAC
MP3, MP4, AAC
7
In a traditional ADC, an Anti-Aliasing filter...
a 2-pole lowpass filter
is a 4-pole lowpass filter
is a brickwall highpass filter
is a brickwall lowpass filter
8
Common bitrates for lossy audiofiles range from...
16-24 Mbps
1-10 Mbps
1,411-2.116 Mbps
128–256 Mbps
9
Dither is...
digital distortion from poor analog-to-digital conversion
random noise added to a digital recording
varying sample rates in multitrack audio ADCs
bad
10
In an ADC, Quantization...
generates a string of binary numbers
corrects the timing of the incoming analog wave
filters the analog wave before sampling
corrects the timing of the incoming MIDI notes
11
Perceptual coding (used in lossy audio codecs) makes use of...
the psychoacoustic phenomenon of masking
the Nyquist theory
the psychoacoustic phenomenon of pitch-detection
the psychoacoustic phenomenon of pitch quantization
12
In an Analog-to-Digital Converter, Sampling...
quantizes an analog wave
generates a string of binary numbers
genererates MIDI data
registers the changing amplitude of an analog wave at discrete points in time
13
For modern DAWs, the standard bit resolution is...
48-bit
16-bit
24-bit
8-bit
14
Quantization distortion is...
consistent low-level distortion in a digital recording
analog distortion associated with vacuum tube amplifiers
harsh digital clipping of the audio wave
gradual clipping of the audio wave in the ADC
15
The Nyquist Rule says that the Sample Rate...
must be at least half the highest audio frequency
should always be 44.1 kHz
must be at least twice the highest audio frequency
must be exactly equal to the highest audio frequency
16
An ADC...
converts analog signals to digital
converts PCM audio to MP3
is an Australian hard rock band
converts digital signals to analog
17
Digital audio represents the audio signal...
in 3D
with a string of binary numbers
with a smooth continuous voltage
with pictograms
18
The current standard method of oversampling is casually referred to as...
1-bit sampling
AC/DC sampling
ADC sampling
lossy sampling
AudioPedia 103
Digital Audio Terms and Standards
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